Desk pad



Patented .Apr. 16, 1929.

UNITED STATES PATENT "WILBUB LF. SANDERS, OF CHIGAGO, JLLINOIS.

DESK PAD.

Application filed December 29, 1928. serial No. &29,399.

My invention relates to desh pads. It relates more particularly to a desk pad of novel character adapted to take the place of the usual large desk blotter. 4

The use of a table top directly for writing purposes is usually found so undesirable that practically all desks are at the present time equipped with a large blotter, supported at the corners and bottom by a specially designed back, leaving the blotter to be used as a writing surface. It is presumed that this blotter will be changed very frequently, -but it is common knowledge that in actual practice it cannot be changed 'frequently enough to maintain a clean tidy appearancc at all times. Moreover the blotter does not eller an entirely satisfactory writing surface for both pen and pencil.

Accordingly the principal object of my present invention is the provision of an improved desk pad to 'take the place of the blot- 'ter described. v i

Another object is the provison of -a desk pad which will always look neat and clean,

and which forms a very satisfactory writing surface for both pen and pencil.

Another object is to produce a writing pad on which paper-will :not slip.

Another object is *to provide a writing pad which Will lie flat on the desk at all times and which will not slide with respect to the desk.

Another object is the provision of a writing ad which will not be injured or marked by lighted cigars or cigarettes, when coming in contact therewith.

Another object is the provision of a writing pad which may be finished in a number of artistic designs and c'olor combinations so as to be a real ornament to a desk. v

Other objects and 'features of the invention 'will be apparent from a consideration of the detailed description taken with the panying drawings wherein- Fig. 1 is a fragmentary perspective View of a desk showing m'y improved writing pad on the top thereof, and

Fig. 2 is a fragmentary enlarged sectional View taken along the line 2-2 of Fig. 1.

' The pad of my invention is adapted to be applied to an ordinary table top 11 and comprising a middle writing surface 12 with raised side edges 13 and 14. The raised edges are ornamented in suitable design, and also act to prevent pen'cils and the like `from rolling oli the pad. The "middle portion of the &CCOIXI- each, 27 parts of clay, and approximate desk pad is perfect-ly fiat and is designed to offer the very best possible *writing surface.

Possbly mypad could be produced *from a number of combinaton substanees, but I have clay, a comparatively large proportion of the rubber' being reclaimed and so acting somewhat as a filler, 'the prinoipal binding dependingmostlyuponthenewrubbeu believethat the clay being retractory has a great deal to do with the unburning characteristics of the pad, and I know that it has its efi'ect upon the degree'of hardness which is of course controlled as it has a great deal. 'to do with the writing quality of the pad. While I am not necessarily restricted. to any particular combination of substances I shall disclose oneparticular formula with which I have obtained unusually good results. 'This consists of standard crepe sheets 6 parts, 'white reclaimed rubber 17 parts, gray reclaimed rubber 14 parts, litlopone 4 parts, sulphur 1 to 4 parte depend ing upon the accelerator etc., a suitable organic accelerator, oil and rosin about 1 art 8 parts of whiting. Coloring material is added depending upon tho'finish desired and for example 'when producing a green pad I use 8 parts of chrome green. j

In making the pad I mix the various ingredients in the usual way and cure the pad in a heated mold as is done with rubberprod- -ucts. The specific manner of carrying out the steps of the process of course may be made to vary. I

The drawing is shaded to show a mottled effect, and this is the design which I find most advantageous. In color combinations I have employed green, blue, brown, eto. with a mottled white mixture, as well as combine-` tions of more than one color with white. For example a mottled pad consistng of dark'brown, tan and white has been produced with unusually good results, as well as mixtures of a dark gray, blue and white.

When formed in this way'the pad does not follow any orderly design, but of course 'it can be made in an orderly design should anything of this sort be dered.

A pad made in accordance with my invention s extremely neat and convenient, and

provides an unsurpassed writing' surface for either pen or pencil. A single sheet of paper may be laid on the pad, and without holding the sheet with the hands at all the paper may be written on and it will hold its position due entirely to its 'contact with the pad. It will not stick to the pad, however, and if it is desired to move any papers around on the pad they can be moved around freely without any possibility whatsoever of causing any adhesion. The pad can be washed off with a damp cloth and so can be spotlessly clean at all times. A lighted cigarette may be laid on the pad and allowed to burn its entire length, and although there will be a slight discoloration due probably to the nicotine present in the cigarette, this spot can be washed ofi' and no permanent discoloration of the pad results. Ink Spots absolutely will not penetrate it, and although they of course leave their mark, they can be washed off with'elear water. The clesk pad is extremely more economical than blotters and is an improvement in every essential re- .spect. Although I have described specific features of my invention including details of composition to enable those skilled in the art to practice the same it is obvious that I:

do not intend to restrict myself' except in sofar as defined by the appended claims What I claim as new and desireto protect by Letters Patent 'of the United States is:

1. As a new article of manufacture a desi:

pad formed of a material having a rubber base and suitable fillers and adapted to iie fiat on the desk without sliding and having' such a degree of hardness that the top surface serves as a proper writing surface when employingonly a single thickness of paper and w en writing with either pen or pencil.

2. As a new article of manufacture a desk pad of proper dimensions to be supported on a desk for a writing pad, and formed of 'molding compound including rubber of such a degree of noncombustibilty as not to be permanently marked by contact with a burning cigar or cigarette.

3. As a new article of manufacture a desk pad formed of molding material having a rubber base of suitable dimensione to be supported on adesk, and with its top surface provided with such a finish as will supporta single sheet of paper without slipping when writing thereon, and when the only contact with'the paper is with the writing instrument itself.

4, As a new article of manufacture a desk padof suitable shape to be supported by the desk, and formed of a molding compound including rubber and a refractory material.

5. As a new article of manufacture a desk pad of suitable shape to be 'supported bythe desk an d formed of a molding compound including rubber-and clay. 4

6. As a new article of manufacture a desi( pad of suitable shape to be supported on a desk and formed of a molding compound including raw rubber, reclaimed rubber, sulphur coloring matter, a white filler, clay, oil and rosin.

In witness whereof, I hereunto subscribe my name this 10th day of December, 1928.

i WILBUR F. SANDERS. 

